Front upper works well, front lower not so well, rear works well also especially if you find one that triangulates like the neuspeed one
front lower mounts between two front wishbone bolts, so if your bushes are knackered/soft itll keep it feeling tighter. And make sure you get a steel lower one if buying one.
Uprated rollbars are a different kettle of fish and you feel them far more than any brace.
All the compenents all add up to a very responsive handling car
springs
shocks
rollbars
braces
bushes